,I saw the girl that we have seen in TV in last summer

不对，last summer就好了，而且不要用完成时。意思也不对，你那么说就是我看见了去年在电视上看见的女孩

应该是I want to see the girl we saw on Tv last year.

I want to see the girl that saw on TV last summer

I want to see the girl who we saw on TV last summer.

I wanna see the girl that we have seen on TV last summer.这样对不?

我看见了我们去年夏天在电视上看见的女孩。

I would like/want to see the girl we saw on TV last summer.

i wanna see the girl who appeared on tv last year